Hash Brown Casserole

Hash Brown Casserole 1 pkg Shredded Hash Brown Potatoes 1 can Cream Of Chicken or Celery Soup 1 cup Cheddar Cheese, shredded 1/2 Stick Margarine 1/2 cup Onion, chopped 1 cup Sour Cream Mix all ingredients in a bowl. Put mixture into a greased 9 x 13 baking dish. Bake, uncovered, at 350F for 45 minutes to 1 hour or, until golden brown.